Unity 读取及设置图片坐标像素

注意: 代码还有些许问题,第二次运行的时候才能成功,程序运行之后,图片透明度不还原,仅供参考

1.测试图片

修改图片属性:

2.Texture2DOP.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Texture2DOP : MonoBehaviour {

    Texture2D texture;
    Color color;
    void Start () {
        color = new Color(0, 0, 0, 0f);

        texture = new Texture2D(GetComponent().texture.width, GetComponent().texture.height, TextureFormat.BGRA32, false);
        texture = GetComponent().texture as Texture2D;
        texture.Apply();
        for (int y = 0; y < texture.height/2; y++)
        {
            for (int x = 0; x < texture.width; x++)
            {
                if (texture.GetPixel(x, y).r == 0 && texture.GetPixel(x, y).g == 0 && texture.GetPixel(x, y).b == 0)
                {
                    texture.SetPixel(x, y + texture.height / 2, color);
                }
            }
        }

    }

}

3.未运行前

运行后 :(运行没反应,再运行一次)

下半部分图片坐标像素如果是黑色,则将上半部分对应的像素设置成透明